TeachLogic IRF-2650 Forum 232 Wireless Classroom Microphone System with Sapphire Mic & 4 Ceiling-Mount Speakers

BH #TEIRF2650CS4 • MFR #IRF-2650/CS4
TeachLogic IRF-2650 Forum 232 Wireless Classroom Microphone System with Sapphire Mic & 4 Ceiling-Mount Speakers
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Expected availability: 3-7 business days
$144/mo. suggested payments
with 12 Mos. Promo Financing* 

Important Notice

  • This item is noncancelable and nonreturnable.
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TeachLogic IRF-2650 Overview

  • 1Description
  • 2TeachLogic Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply
  • 3TeachLogic Infrared Dome Sensor
  • 4TeachLogic IRH-35 Handheld Microphone with Infrared Transmitter and Rechargeable Batteries
  • 5TeachLogic IRT-60 Sapphire Infrared Microphone with Plug-In Charger
  • 6TeachLogic BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters

The IRF-2650 Forum 232 Wireless Microphone System from TeachLogic is a sound-field system for classroom presentation. This system consists of an IMA-232 Amplifier/Receiver Base Station, IRT-60 Sapphire Microphone Transmitters with Lithium-ion Batteries, IRH-35 Handheld Infrared Transmitter/Microphone with NiMH Batteries, an ICS-55 Ceiling Sensor for IR connectivity throughout the room, and four CS-4 Ceiling Speakers. It also includes a BRC-55 Drop-In Charger for charging the Sapphire transmitters.

The IRF-2650 features a Digital Feedback Guard (DFG) that eliminates acoustical feedback. The wireless Sapphire microphone has a capsule which allows maximum gain before feedback. It has a 50W Digital Hybrid Class D amplifier. The system allows remote adjustment of inputs via the RS-232 wall panel controller. The unit has two infrared wireless microphones which can be used simultaneously. It provides two auxiliary line inputs for multi-media integration with even distribution of sound for the audio in the classroom. The Forum 232 has a Line level output for lesson capture and another output for Assistive Listening System (ALS).

The Forum 232 is an infrared wireless microphone sound system. It is the nucleus of the classroom sound field system which provides optimum voice reinforcement. The wireless function permits 360° connectivity throughout the classroom regardless of body position or orientation.

The system is comprised of an infrared detecting sensor installed in the ceiling. The sensor collects the IR wireless signal from the microphone/transmitter and sends a composite signal to the mixer/amplifier via the included 50' plenum-rated cable. The receiver transforms the composite signal into an analog audio signal which is fed to the amplifier mixer. Two other audio sources, such as computer, DVD, VCR, or projector can be plugged in to the Forum 232. The volume level of each input will be controlled by the individual volume control of each input. The audio will then be fed to the speakers in the room for even voice reinforcement throughout the room.

On the front panel of the Forum 232, there are two 3.5mm output jacks for interface with an assistive listening system (ALS) and lesson capture (REC). The rechargeable batteries offer 6 to 8 hours of usage per charge. The drop-in charger will recharge the batteries overnight, ready for another day’s use.

TeachLogic Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply

The Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply from TeachLogic is the nucleus of the Forum 232 Wireless Classroom Microphone System. This receiver is designed for use with the Sapphire or handheld microphone transmitters (all sold separately). These transmitters transmit the vocal signal via infrared light to the dome sensor (sold separately) installed on the ceiling. The signal is then sent via cable to the receiver input of the mixer/amplifier. The signal is detected and then processed through the power amplifier to the speakers.

The unit features RS-232 wall panel control of the line inputs, remote teacher security alert, teacher priority with instant attenuation of the line levels via Sapphire IRT-60 pendant mic (available separately), DFG (Digital Feedback Guard), and switchable anti-hum circuit on the computer input.

Dual infrared wireless microphone receivers
Two Power Amplifiers: Total 50W RMS Class D amplifier, 25W each channel
Security alert output
RS-232 wall panel control of line input levels
Switchable computer anti-hum circuit with ON/OFF switch
Teacher priority instantly attenuates all line inputs
Three-band digital equalizer ±12dB
Digital limiting
Two stereo auxiliary inputs for DVD and computer/Aux
Additional DVD input gain, adjustable +10 dB boost
3.5mm front-panel auxiliary input
3.5mm ALS output for assistive listening system with gain control on front panel
3.5mm REC output for lesson capture with gain control on front panel
Powers up to 4 speakers (not included)
Power sleep mode to conserve energy
Rack or shelf mountable using optional kits (not included)
Lightweight aluminum cover

TeachLogic Infrared Dome Sensor

TeachLogic's Infrared Dome Sensor needs to be installed on the ceiling at least 3' from the video projector. It comes with a mounting/support bracket and 50' of plenum rated cable with RCA connector on each end. The ideal location for the dome sensor would be in the center of the ceiling. This will provide a clear signal path for the IR transmission from the transmitter to the dome sensor without obstruction. In addition, you will have 360° coverage and will minimize the transmission distance for more reliable performance. It collects the infrared transmission signal via 6 large detecting diodes. The sensor is connected to the mixer/amplifier via a plenum rated cable terminated with RCA connectors. The mixer/amplifier supplies the power to the sensor.

Easily installs on ceiling "T" bar with track bracket
6 large receiving diodes for infrared reception

TeachLogic IRH-35 Handheld Microphone with Infrared Transmitter and Rechargeable Batteries

The TeachLogic IRH-35 Handheld Microphone with Infrared Transmitter and Rechargeable Batteries is a handheld mic with a built-in infrared transmitter for use with TeachLogic infrared sound systems. The unit has an ergonomic design and very low handling noise, making it well suited for passing around among students for Q&A sessions and classroom participation. The cardioid condenser mic reproduces clear, intelligible speech, while the built-in windscreen prevents breath pops.

Two AA batteries will power the mic for up to 7 hours. The emitting diodes are located around the top and bottom ends of the handle for 360° transmission, ensuring reliable wireless IR connectivity to the receiver throughout the classroom. The system offers a 60' operating range.

Features at a Glance

  • Condenser microphone element
  • Power "on/off" switch
  • Battery level indicator-LED
  • Powered by two included rechargeable AA batteries for up to 7 hours
  • 2 selectable channels
  • 10 high-power emitting diodes
  • 360º IR radiation for assured connectivity
  • Diodes at top and bottom of handle for increased coverage
    • 2 top - aimed out
    • 6 bottom - 360°
    • 2 bottom - aimed down

Works with All TeachLogic Infrared Audio Systems

  • Matrix
  • Maxim III
  • Spectrum III
  • Forum 232
  • Quantum II
  • Voicelink
UPC: 850005843177

TeachLogic IRT-60 Sapphire Infrared Microphone with Plug-In Charger

The TeachLogic IRT-60 Sapphire is a compact and lightweight infrared microphone that can be worn around your neck or clipped to clothing, making it well suited for teachers, instructors, and lecturers. Its cardioid polar pattern delivers focused vocal clarity with minimal ambience while the built-in breath filter reduces plosives and the integral rubber shock suspension impedes vibrations. The internal lithium-ion battery provides up to eight hours of use and conveniently recharges via the supplied BRC-15 plug-in charger.

The ITR-60 Sapphire also features a 3.5mm stereo aux input to accommodate an external source such as a smartphone, an MP3 player, or a headworn mic. The mic gain and amplifier volume are adjustable, so you can effectively optimize the signal level. The power button doubles as an easy mute on/off function. When the IRT-60 Sapphire is used with a compatible amplifier/receiver, the switchable teacher priority automatically lowers the audio volume of aux/line inputs upon detection of incoming mic signal.

  • Utilizes infrared transmission on 2.08 or 2.54 MHz
  • Operating range up to 60'
  • Cardioid (unidirectional) polar pattern yields enhanced vocal clarity
  • Built-in breath filter and integral rubber shock suspension
  • Only 1.4 ounces including battery
  • Internal lithium-ion battery provides up to 8 hours of operating time
  • Rechargeable via micro-USB or BRC-60 charging dock (available separately)
  • Battery level indicator
  • Backlight under power switch
  • Momentary mute button
  • Backlight blinks in mute mode
  • Push on/off power
  • Channel A or B selectable
  • 3-level high/mid/low mic volume switch (normal, - 3 dB, -6 dB)
  • 3.5mm stereo auxiliary input for audio device or headworn mic
  • Low-profile clip for mounting to lapel or pocket
  • Adjustable lanyard and BRC-15 plug-in charger included
  • Security alert activation (press/hold priority button for five seconds)
  • Teacher "priority" control over aux/line inputs (lowers audio volume)
  • Priority switch only functions with the Matrix, Forum 232, Maxim III, and Spectrum III amplifier/receiver
  • Multicolor LED: no light (power off), solid blue (power on), blinking blue (mic is muted), solid red during use (low battery), solid red during charging (charging in progress), solid green during charging (fully charged), solid purple (audio devices connected to the receiver have been quieted)
  • Suitable replacement for IRT-55 and IRT-89 infrared microphones

TeachLogic BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters

TeachLogic's BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters is a drop-in charger for two TeachLogic Sapphire transmitters and one IRH-35 or IRH-40 handheld micrphone/transmitter.

TeachLogic Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply Specs

Receiver InputInfrared FM
ModulationFM Wide-band
Reception FrequenciesChannel A: 2.08 MHz
Channel B: 2.54 MHz
IR Wavelength850 nm
Tone SignalChannel A: 32.768 kHz
De-Emphasis50 µs
Frequency Response40 Hz, -18 kHz, ± 3 dB
S/N Ratio> 65 dB
THD< 1% @ 1 kHz
Nominal Deviation± 10 kHz
Maximum Deviation± 25 kHz
Sensor InputExternal: 2 x RCA
ConnectivityCoverage: 1,600 sq. ft
AUX Inputs1 x DVD, line level, dual RCA with +10dB gain control
1 x Aux input with front and rear panel 3.5mm
Line Output2 x 3.5mm with gain control on front panel
Equalization3-Band ±12 dB
Output Power2 x Digital amplifiers, 25 W each (RMS) 50 W total (RMS)
Output Impedance4 Ω minimum per channel
Output Connection1 x Phoenix connector
Power Supply19 VDC / 3.4 A
CertificationsCE, CSA, and UL listed
Dimensions (W x H x D)8.5 x 1.7 x 7.5" (215.9 x 43.1 x 190.5 mm)
Weight1.5 lb (0.6 kg)

TeachLogic Infrared Dome Sensor Specs

Operating Frequencies2.3 mHz to 2.8 mHz
IR Receiver6 large lens diodes
Range40-50' (12.19-15.24 m) line of sight, 2500 ft2 (232.25 m2)
MountingClip-on "T" bar bracket
ConnectorFemale RCA
Indicator LightsGreen LED for Power On
Cable75 ohm
Cable Length50' (15.24 m)
Dimensions4.62 x 1.37" (11.73 x 3.47 cm)
Weight0.46 lbs (0.2 kg)

TeachLogic IRH-35 Handheld Microphone with Infrared Transmitter and Rechargeable Batteries Specs

Wireless TransmissionAnalog IR
RF Frequency Band 2.08 MHz
2.54 MHz
RF Channel ScanningManual
Max Operating Range60' / 18.3 m
Transmitter 1
Form FactorHandheld
Audio I/ONone
MutingOff/On Switch
Auto-Level ControlNo
Power RequirementsBattery
Battery Type2 x Rechargeable (Included, Replaceable)
Approx. Battery Life7 Hours
Display & IndicatorsLED (Battery Status)
Form FactorHandheld
Sound FieldMono
Polar PatternCardioid
Length9.625" / 244.475 mm
Diameter2.125" / 53.975 mm
Weight10.3 oz / 292 g
Packaging Info
Package Weight0.8 lb
Box Dimensions (LxWxH)10.3 x 2.8 x 2.5"

TeachLogic IRT-60 Sapphire Infrared Microphone with Plug-In Charger Specs

Transmission Frequencies2.08 and 2.54 MHz
Transmission Angle180° Conical
Transmitting Diodes6
ModulationFM Wideband
Pilot Tone32.768 kHz
Peak Deviation≥25 kHz
Operating RangeUp to 60' / 18.3 m
Input1 x 1/8" / 3.5 mm TRS
Polar Pattern (Microphone)Cardioid
Mic Gain RangeNormal, -3 dB, -6 dB
Power RequirementsInternal Battery
Battery TypeLithium-Ion (3.7 V, 620 mAh)
Battery LifeUp to 8 Hours
Charging5 VDC via Micro-USB
Dimensions (H x W x D)3.5 x 1.3 x 0.8" / 8.9 x 3.2 x 1.9 cm
Weight1.4 oz / 39.7 g (Including Battery)
Packaging Info
Package Weight0.205 lb
Box Dimensions (LxWxH)5 x 3.3 x 1.4"

TeachLogic BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters Specs

CompatibilityCompatible with TeachLogic Sapphire and IRH-35/40 Microphones/Transmitters
Charging Time10-12 Hours
Indicator LightsRed: Charging
Green: Charged
Dimensions7.75 x 2.75 x 3.75" (19.68 x 6.98 x 9.52 cm)
Weight1.75 lb (0.79 kg)
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